When our buddy Dr. Travis Stork stopped by, he demonstrated exactly how he washes away germs (watch him in the video above!). That's when he revealed something unexpected: One of the dirtiest parts of your body -- and you’re not paying attention to it -- is your forearm!

Now, if -- not for a lack of effort on your part -- you do start developing a sore throat or a cough, Dr. Travis suggests hot green tea with natural honey (a cough suppressant, he says), ginger and cayenne pepper (for those clogged sinuses!).